Brother DCP-7090, Руководство по обслуживанию

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Check the following items before attempting to repair the machine. Check the following items before attempting to repair the machine.
  Operating environment Operating environment
(1) (1) The m The machin achine is e is placed placed on a on a flat, flat, stabl stable sur e surface. face.
(2) (2) The mach The machine is use ine is used in a clean en d in a clean environm vironment where t ent where the temper he temperature is be ature is between 10° tween 10°C C
(50°F) and 32°C (89.6°F) and the relative humidity is maintained between 20% and 80%. (50°F) and 32°C (89.6°F) and the relative humidity is maintained between 20% and 80%.
(3) (3) Ensure the ma Ensure the machine is not exp chine is not exposed to direc osed to direct sunligh t sunlight, excess t, excessive heat, moi ive heat, moisture, or dus sture, or dust. t.
(4) (4) Keep the mach Keep the machine horizo ine horizontal whe ntal when you carry it. T n you carry it. To prevent inj o prevent injuries whe uries when moving or lif n moving or lifting ting
this machine, make sure to use at least two people. this machine, make sure to use at least two people.
  Power supply Power supply
(1) (1) The AC inpu The AC input power su t power supply desc pply described on th ribed on the rating p e rating plate of the m late of the machine s achine should be w hould be within ithin
±10% of the rated voltage. ±10% of the rated voltage.
(2) (2) The AC The AC input input power power supply supply is wit is within th hin the regul e regulated v ated value. alue.
(3) (3) The ca The cables a bles and harn nd harnesses esses are con are connected nected correc correctly tly..
(4 (4)) Th The fu e fuse ses ar s are no e not bl t blow own. n.
  Paper Paper
(1) (1) A rec A recomme ommende nded typ d type of pa e of paper i per is bei s being use ng used. d.
(2 (2)) Th The p e pap aper i er is no s not da t damp mp..
(3) (3) The p The paper i aper is not s s not short-g hort-grained rained paper paper or acid or acid paper paper..
  Consumable parts Consumable parts
(1) (1) The drum uni The drum unit (includi t (including the toner car ng the toner cartridge and ton tridge and toner box) is inst er box) is installed corr alled correctly ectly..
  Others Others
(1 (1)) Co Cond nden ensa sati tion on
When the machine is moved from a cold place into a warm room, condensation may occur When the machine is moved from a cold place into a warm room, condensation may occur
inside the machine, causing various
inside the machine, causing various problems as listed below. problems as listed below.
•• Conden Condensation on the surfac sation on the surface of optical devices su e of optical devices such as the lens, reflecti ch as the lens, reflecting mirror ng mirror, and , and
protection glass, etc., may cause light print image. protection glass, etc., may cause light print image.
•• If the exposure drum is cold If the exposure drum is cold, the electric , the electrical resist al resistance of the photosen ance of the photosensitiv sitive layer is e layer is
increased, making it impossible to obtain the correct contrast when printing. increased, making it impossible to obtain the correct contrast when printing.
•• Conden Condensation on the ch sation on the charge unit may ca arge unit may cause corona ch use corona charge leaka arge leakage. ge.
•• Condens Condensation on the plate and sepa ation on the plate and separation pa ration pad may cause paper feed prob d may cause paper feed problems. lems.
If condensation has occurred, leave the machine for at least two hours to allow it to reach If condensation has occurred, leave the machine for at least two hours to allow it to reach
room temperature.
room temperature.
If the drum unit is unpacked soon after it is moved to a warm room from a cold location, If the drum unit is unpacked soon after it is moved to a warm room from a cold location,
condensation may occur inside the unit which may cause printing failure. Leave the
condensation may occur inside the unit which may cause printing failure. Leave the
drum unit for one or two hours until it reaches room temperature, and then unpack it.
drum unit for one or two hours until it reaches room temperature, and then unpack it.
(2 (2)) Lo Low te w temp mper erat atur ure e
The motor may not drive normally under the low temperature environment. This is due to The motor may not drive normally under the low temperature environment. This is due to
there being too much load to drive each unit. In this case, increase the room temperature.
there being too much load to drive each unit. In this case, increase the room temperature.